Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38

The Cassava starch manufacturing wastewater (CSW) was used as a substrate to produce polyhydroxybutyrate (PHB) by Cupriavidus sp. KKU38. The acidogenic fermentation process of CSW was first conducted to obtain volatile fatty acids (VFAs), which are more efficient in PHB production than raw CSW. The...

Full description

Bibliographic Details
Main Authors:	Sangyoka, S, Poomipuk, N, Reungsang, A
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2012
Online Access:	http://journalarticle.ukm.my/5526/ http://journalarticle.ukm.my/5526/ http://journalarticle.ukm.my/5526/1/06%2520S.%2520Sangyoka.pdf

id	ukm-5526
recordtype	eprints
spelling	ukm-55262016-12-14T06:38:43Z http://journalarticle.ukm.my/5526/ Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38 Sangyoka, S Poomipuk, N Reungsang, A The Cassava starch manufacturing wastewater (CSW) was used as a substrate to produce polyhydroxybutyrate (PHB) by Cupriavidus sp. KKU38. The acidogenic fermentation process of CSW was first conducted to obtain volatile fatty acids (VFAs), which are more efficient in PHB production than raw CSW. The effect on substrate concentration and nutrients, i.e. nitrogen and phosphorus concentrations, by means of chemical oxygen demand: nitrogen: phosphorus ratio (COD:N:P ratio) variation was investigated. The results indicated that PHB production from fermented CSW by Cupriavidus sp. KKU38 was optimized at the soluble COD:N:P ratio of 100:0.5:11. This ratio gave the maximum PHB content and yield of 85.53% and 0.31 g PHB/g COD consumed, respectively. By using the proposed PHB production process, the potential to produce 0.19 kg of PHB from 1.0 kg of soluble chemical oxygen demand (sCOD) contained in CSW was exhibited. The relatively high COD removal efficiency of 73.82% at the optimal condition could be achieved, which demonstrated the concept of water quality improvements alongside the production of the value-added by-product, PHB. Universiti Kebangsaan Malaysia 2012-10 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/5526/1/06%2520S.%2520Sangyoka.pdf Sangyoka, S and Poomipuk, N and Reungsang, A (2012) Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38. Sains Malaysiana, 41 (10). pp. 1211-1216. ISSN 0126-6039 http://www.ukm.my/jsm/contents.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The Cassava starch manufacturing wastewater (CSW) was used as a substrate to produce polyhydroxybutyrate (PHB) by Cupriavidus sp. KKU38. The acidogenic fermentation process of CSW was first conducted to obtain volatile fatty acids (VFAs), which are more efficient in PHB production than raw CSW. The effect on substrate concentration and nutrients, i.e. nitrogen and phosphorus concentrations, by means of chemical oxygen demand: nitrogen: phosphorus ratio (COD:N:P ratio) variation was investigated. The results indicated that PHB production from fermented CSW by Cupriavidus sp. KKU38 was optimized at the soluble COD:N:P ratio of 100:0.5:11. This ratio gave the maximum PHB content and yield of 85.53% and 0.31 g PHB/g COD consumed, respectively. By using the proposed PHB production process, the potential to produce 0.19 kg of PHB from 1.0 kg of soluble chemical oxygen demand (sCOD) contained in CSW was exhibited. The relatively high COD removal efficiency of 73.82% at the optimal condition could be achieved, which demonstrated the concept of water quality improvements alongside the production of the value-added by-product, PHB.
format	Article
author	Sangyoka, S Poomipuk, N Reungsang, A
spellingShingle	Sangyoka, S Poomipuk, N Reungsang, A Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38
author_facet	Sangyoka, S Poomipuk, N Reungsang, A
author_sort	Sangyoka, S
title	Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38
title_short	Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38
title_full	Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38
title_fullStr	Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38
title_full_unstemmed	Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38
title_sort	optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. kku38
publisher	Universiti Kebangsaan Malaysia
publishDate	2012
url	http://journalarticle.ukm.my/5526/ http://journalarticle.ukm.my/5526/ http://journalarticle.ukm.my/5526/1/06%2520S.%2520Sangyoka.pdf
first_indexed	2023-09-18T19:44:23Z
last_indexed	2023-09-18T19:44:23Z
_version_	1777405802190995456

Optimum conditions for the production of polyhydroxybutyrate from cassava wastewater by the newly isolated cupriavidus sp. KKU38

Similar Items